India launches low-cost mobile phone batteries use the traditional 7
An Indian mobile company recently released a low-cost cell phone that can use ordinary AAA battery (7 cells).
Olive India Telecom recently released called "FrvrOn" (forever on the acronym) cell phone that has two battery slots, one for ordinary mobile phones use lithium batteries, another for ordinary AAA battery.
According to Olive telecom sales manager said, this phone can rely on lithium continuously for 3 hours, then you can also rely on common battery for 1 hour.
Phone users in the use of electricity is not convenient to travel to an area that can help ordinary batteries for mobile power supply for their own, such a battery can be purchased anywhere.
There are over 200 mAh battery hidden
Many people noted that most claims long standby mobile phone, mobile phone firms are domestic or machine, and all efforts on the battery capacity. Generally are well-known mobile phone battery capacity 1000 mAh or less, and long standby mobile phone battery easily thousands mAh capacity. Some people questioned whether a simple increase battery capacity can be achieved long standby mobile phone?
Zhou Gang, explained that the current capacity of 2000 mAh batteries following the battery type, large-scale production technologies and processes have been very mature, quality and safety are protected; but for more than 2000mAh, the technology and processes are not very mature, there is a big security risk. Long standby mobile phone is now generally in less than a week, of course, there are claims that can reach more than a month, but this is rare.
He warned that blindly increase battery capacity, a security risk in the event of short circuit, the battery is a time bomb. "High capacity battery, cathode material is bound more batteries overheating (short-circuit or heat) can easily lead to rapid evaporation of the electrolyte, the moment when the internal pressure increases rapidly to exceed the capacity of the shell when it exploded."
Japan Steel and AIST trial of 16.7% of high-efficiency CIGS solar cells
Japan Steel and Industrial Technology Research Institute (hereinafter referred to as AIST) using a newly developed low-cost metal plate, trial out of CIGS (copper indium gallium selenide) solar cells, the conversion efficiency as high as 16.7%. Japan Steel plans to make the post-2011 development of the metal plate to achieve commercialization.
CIGS thin-film type solar cells in solar cell conversion efficiency, the two companies expect the solar cells can become the crystalline silicon solar cells after the new battery. So that the bottom film CIGS solar cells had to use more glass, is currently facing with the softness of the solar cells, developing a film on the metal plate technology. It is reported that previous studies of the metal plate and more difficult for CIGS solar cells with a negative impact on the titanium foil and the molybdenum foil-based, but there is such a large area of floor material supply and cost issues. To address these issues, the two companies also consider the use of inexpensive stainless steel foil, but the high temperature film solar cell, the metal chassis components will spread to the CIGS layer, so there is a serious impact on power generation efficiency.
Japan Steel The development of a cost may be lower than the low carbon stainless steel foil-based thin metal plate. Less than the original price of low carbon steel titanium foil 1 / 10, is about half of stainless steel foil, polyimide film about 1 / 4.
Affect the efficiency of CIGS solar cells on the elements of proliferation, the two companies through the formation of an independent film to surface treatment to control. The surface film can film in the atmosphere can support low-cost process.
The product of the conversion efficiency of CIGS solar cells have achieved the highest level, AIST had been in promoting the metal floor-based flexible solar cells development. In addition, also working on the development of large area modules. AIST developed using Japan Steel membrane with a surface low-cost CIGS solar cell prototype metal plate, the small area unit conversion efficiency of 16.7% (intrinsic conversion efficiency, power generation unit area of about 0.5cm2). The conversion efficiency "is the use of low-cost, high efficiency when the floor" (two companies).
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